Paper-board drum or container



y 1959 T; A. HENDRY 2 ,888,l84

PAPER-BOARD DRUM OR CONTAINER Filed May 51, 1957 Hum 1111m W Ill) \A A A2?. "0 15 9 I G 4 g 4 fig.

INVENTOR. 77 9mm A. HENDRX MS MIFD/MS Q ROBINSON.

PAPER-BOARD DRUM OR CONTAINER Thomas A, Hendry, Mariemont, Ohio,assign'o'r to The 'Excello Paper Products Company, "Cincinnati, Ohio, acorporation of Ohio Application May 31, 1957, Serial No. 662,690

11 Claims. crew-5.5

' presented the problem of effecting a tight joint at the lapped sidejoint at the base of the notch between the ter minal tabs.

Heretofore, one of the'terminal tabs has been of fractional size to lapthe opposite terminal tab offull' size for extending the lapped joint ofthe sides intoithe terminal tabs between adjacent notches or withterminal tabs of equal size lapped with the side edges of said lappedtabs in registration. Or the entire outer edge of each terminal tab isinclined inwardly from its outer free end to intersect the score line.In theseconstructions, however, the lapped terminal tabs are inregistration to preserve the symmetry of the tabs and the interveningnotches. These constructions result in a double layer of the terminaltabs extending to their free ends which make them more diflicult to bendover and, when so bent, do not lie in the same plane with the othertabs. Moreover, bending of the double thickness terminal tabs is alsoresisted by adhesive material which is employed for adhesively bondingsaid lapped ltabs. It is the aim of this invention to obtain aneffective joint with minimum lap and with the symmetry of the tabs andnotches preserved.

Accordingly, one of the main objects of this invention is a tubular drumhaving a free extension adjacent one of the terminal tabs for lappingwith both terminal tabs.

Another object of the invention is a tubular drum having a free lappingportion between the tabs.

Another object of the invention is a tubular drum having between thebases of the terminal tabs a free lapping portion.

Further objects, and objects relating to details of construction andeconomies of operation, will readily appear from the detaileddescription to follow. In one instance, the objects of this inventionhave been accomplished by the devices and means set forth in thefollowing specification. The invention is clearly defined and pointedout in the appended claims, and a construction constituting onepreferred embodiment of the invention is illustrated in the accompanyingdrawings, forming a part of this specification, in which:

Fig. 1 is a plan view of paper-board blank which is adapted to be foldedto form a tubular drum embodying the invention.

Fig. 2 is a perspective view of the drum prior to formation of the endclosure.

Fig. 3 is an enlarged partial bottom view of the finished drum.

Fig. 4 is an enlarged interior view of that end portion United StatesPatent F Patented May 26, 1959 2 of the drum with the free lappingportion between terminal tabs.

Referring specifically to the drawings in which like numerals designatelike parts, numeral 2 (Fig. 1) is a paper-board blank provided with acoating lining 3 on one side of any suitable material to render theboard impervious to liquids. One edge of the blank which is to formone'end of the drum is provided with a series of tabs 4, of anyconfiguration, set off by alternatingnotches 5. These notches arepreferably V-shaped, giving the tabs 4 the conformation of a truncatedtriangle with inclined sides 6. The tabs4 are set off from the main bodyof the blank by score line 7 parallel to the tabbed edge but spaced fromthe base of the tabs so as to be also substantially spaced from thebottom of the notches-5 by the portion 8. This portion 8 is a part ofthe main portion of the blank between the score line 7 and the tabs 4but is folded with the tabs along the score line to form a surroundingmargin for the closed end. The channel portion of the score 7 is on theinterior of the drum and the rib side on the exterior thereof to providefor seating the peripheral edge of an end closure disc hereinafterdescribed.

The tabs 4 are of similar conformation with full terminal tabs 9 and 10provided. The side edge 11 of terouter side edge 15 of tab 10 an obtuseangle and extending to the side edge 16 of the blank to intersect thescore line 7. The side edge 16 of the blank terminates at the score line7 and does not cross it. This inclined edge 14 may or may not beextended across the score line as desired but does extend into it.

The opposite side edges 12 and 16 of the blank are overlapped into alapped joint, sealed by adhesive, and secured by other means, such astape or metal staples if desired, to form a tubular structure shown inFig.2. The side edges '12 and 16 are brought together'with the free endsof the terminal tabs 9 and 10' spaced apart to form a notch 20 aboutequal to the width of each of the other notches to be symmetricaltherewith. This sets off the free ends of terminal tabs 9 and 10 insymmetrical design with the free ends of the other tabs, and with theextension 13 lapped with the base portion of terminal tab 9. Thesymmetrical design of the tab is maintained and the symmetrical designof the notches is only slightly impaired by the lapped portion betweenthe terminal tabs. However, the lap could be such as to be formedentirely in the portion 8 by making the extension 13 smaller. The sizeof the terminal notch could thereby be made substantially identical insize with the other notches and with the extension 13 lapped only withthe portion 8 below the terminal tab 9.

This extension 13 is beneath the base portion of the ,terminal tab 9,and the slit 13a permits the edge 21 thereof to lap with the edge 22 ofthe other terminal tab 10 when said tab is folded inwardly as shown inFig. 3.

By having the extension 13 slit from the terminal tab 10 by slit 13a,rather than integral therewith, it is more easily bent inwardly and doesnot cause any pucker or bulge between the adjacent terminal tabs 9 and10. The edges 21 and 22 resulting from slit 13a will overlap and effecta light lapped joint. A bottom disc 23 is inserted to close the tabbedend, it being beneath the inturned tabs.

This case is an improvement upon the paperboard drum shown in my Patent2,820,584 which issued January 21, 1958 from application Serial No.645,744 filed March 13, 1957, and incorporated herein in full as a partof the present disclosure.

From the foregoing description of the illustrated embodiment, it will beseen that effective sealing is provided with the lapping portioninterposed between the terminal tabs and that said lapping is obtainedat the bases of said terminal tabs to leave the symmetry of their freeedges unimpaired. While this slit 13a is preferably disposed parallel tothe edges 12 and 16 of the blank, it

.could, of course, be disposed in any direction.

.drum, a series of tabs formed on one end of the body .with interveningV-shaped notches, a score line formed along and slightly spaced from thebottom of the notches,

.and an extension slit from the base of one of the terminal tabs havingan inclined outside edge intersecting the 'score line and alsointersecting with the side of said terminal tab at a substantialdistance from its free end, said terminal tab and its extensionproviding a combined base width exceeding the base width of the oppositeterminal tab for lapping therewith.

- 2. The tubular drum of claim 1 having a closure disc conforming incross-section to the configuration of said drum with its peripherialedge seated in the score line, said tabs being bent over the disc andsecured thereto and having the edges of the slit overlapped.

3. A tubular drum comprising a paper-board body bent 1 into tubular formwith its opposite side edges lapped and secured, forming a lapped jointlengthwise of said drum, a series of tabs formed on one end of the bodywith intervening V-shaped notches, a score line formed along the end ofthe body, and a triangular extension on the body interposed between thetwo adjacent terminal tabs and detached therefrom, said triangularextension having a free outer edge inclined from a midpoint at the sideof one terminal tab to a point at the base of the adjacent terminal taband lapping the opposite terminal tab.

2,ses,1sa w 4. A blank adapted to have its opposite side ends lapped andsecured for being formed into a tubular drum, a plurality of tabs formedalong one end of the blank with intervening notches, an extension at thebase of one of the terminal tabs adapted to lap the base of the otherterminal tab, said extension and its adjacent terminal tab having acombined width exceeding the width of the other terminal tab, and a slitformed in the extension to sever same from the terminal tab.

5. The blank of claim 4 in which the slit is substantially parallel withthe lapping side ends of said blank.

6. The blank of claim 5 having a score line formed along the tab end,adjacent the base of said tabs.

7. The blank of claim 6 in which the inclined edge of the extension issubstantially below the free end of the terminal tab from which it isslit.

8. A generally rectangular paper-board blank adapted to be bent intotubular form with its opposite side edges fastened together, lengthwiseof said formed tube, a series 'of tabs set off on one end of the body bydivisions therebetween, including terminal tabs on the opposite sideedges, and a lapping extension for one terminal tab for providing a basewidth exceeding that of the other terminal tab, said extension having aninclined outer edge for forming the bottom of a division formed betweenthe side edges of the lapped terminal tabs when the blank is bent intotubular form.

9. The paper-board blank of claim 8 in which thetabs are in the form oftruncated triangles with intervening V- shaped notches.

1 0. The paper-board blank of claim 8 in which a slit is formed in theextension to sever same from the terminal tab having a common basetherewith.

11. The paper-board blank of claim 9- in which a slit is formed in theextension to sever same from the terminal tab having a common basetherewith.

References Cited in the file of this patent UNITED STATES PATENTS880,952 Yarnall Mar. 3, 1908 2,755,983 Ringler July 24, 1956 7 2,820,584Hendry Ian. 21, 1958

